Present simple (I do)

Study this example situation: Alex is a bus driver, but now he is in bed asleep. He is not driving a bus. (He is asleep.) But he drives a bus. (He is a bus driver.) Drive(s)/work(s)/do(es) etc. is the present simple:

Present Continuous

Study this example situation: Sarah is in her car. she is on her way to work. She is driving to work. This means: she is driving now, at the time of speaking. The action is not finished. Am/is/are + -ing is the present